ASTM B617 Coin Silver vs. ASTM B628 Ag-Cu
Both ASTM B617 coin silver and ASTM B628 Ag-Cu are otherwise unclassified metals. They have 82% of their average alloy composition in common.
For each property being compared, the top bar is ASTM B617 coin silver and the bottom bar is ASTM B628 Ag-Cu.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 75 | |
| 83 |
| Elongation at Break, % | 1.1 to 22 | |
| 1.1 to 17 |
| Poisson's Ratio | 0.37 | |
| 0.36 |
| Shear Modulus, GPa | 28 | |
| 31 |
| Shear Strength, MPa | 180 to 290 | |
| 210 to 430 |
| Tensile Strength: Ultimate (UTS), MPa | 290 to 520 | |
| 350 to 760 |
Thermal Properties
| Latent Heat of Fusion, J/g | 120 | |
| 140 |
| Melting Completion (Liquidus), °C | 870 | |
| 780 |
| Melting Onset (Solidus), °C | 780 | |
| 780 |
| Specific Heat Capacity, J/kg-K | 250 | |
| 280 |
| Thermal Expansion, µm/m-K | 19 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 83 | |
| 84 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 72 | |
| 75 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 10 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.1 | |
| 4.6 |
| Stiffness to Weight: Bending, points | 14 | |
| 14 |
| Strength to Weight: Axial, points | 7.7 to 14 | |
| 9.5 to 21 |
| Strength to Weight: Bending, points | 9.3 to 14 | |
| 11 to 18 |
| Thermal Shock Resistance, points | 14 to 25 | |
| 16 to 34 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0050 | |
| 0 to 0.0050 |
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 to 0.050 |
| Copper (Cu), % | 9.0 to 10.4 | |
| 26.6 to 29 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 to 0.050 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 to 0.030 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 to 0.010 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.030 |
| Silver (Ag), % | 89.6 to 91 | |
| 71 to 73 |
| Zinc (Zn), % | 0 to 0.060 | |
| 0 to 0.060 |
| Residuals, % | 0 to 0.060 | |
| 0 to 0.21 |